package com.saver.common.utils;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class AddressUtils {


    public static String getAddresses(String content, String encodingString) {


        // 这里调用淘宝API

        String urlStr = "http://ip.taobao.com/service/getIpInfo.php";

        // 从http://whois.pconline.com.cn取得IP所在的省市区信息

        String returnStr = getResult(urlStr, content, encodingString);

        if (returnStr != null) {

            // 处理返回的省市区信息

            System.out.println("(1) unicode转换成中文前的returnStr : " + returnStr);

            returnStr = decodeUnicode(returnStr);

            System.out.println("(2) unicode转换成中文后的returnStr : " + returnStr);

            String[] temp = returnStr.split(",");

            if(temp.length<3){

                return "0";//无效IP，局域网测试

            }

            return returnStr;

        }

        return null;

    }

    private static String getResult(String urlStr, String content, String encoding) {

        URL url = null;

        HttpURLConnection connection = null;

        try {

            url = new URL(urlStr);

            connection = (HttpURLConnection) url.openConnection();// 新建连接实例

            connection.setConnectTimeout(2000);// 设置连接超时时间，单位毫秒

            connection.setReadTimeout(2000);// 设置读取数据超时时间，单位毫秒

            connection.setDoOutput(true);// 是否打开输出流 true|false

            connection.setDoInput(true);// 是否打开输入流true|false

            connection.setRequestMethod("POST");// 提交方法POST|GET

            connection.setUseCaches(false);// 是否缓存true|false

            connection.connect();// 打开连接端口

            DataOutputStream out = new DataOutputStream(connection

                    .getOutputStream());// 打开输出流往对端服务器写数据

            out.writeBytes(content);// 写数据,也就是提交你的表单 name=xxx&pwd=xxx

            out.flush();// 刷新

            out.close();// 关闭输出流

            BufferedReader reader = new BufferedReader(new InputStreamReader(

                    connection.getInputStream(), encoding));// 往对端写完数据对端服务器返回数据

            // ,以BufferedReader流来读取

            StringBuffer buffer = new StringBuffer();

            String line = "";

            while ((line = reader.readLine()) != null) {

                buffer.append(line);

            }

            reader.close();

            return buffer.toString();

        } catch (IOException e) {

            e.printStackTrace();

        } finally {

            if (connection != null) {

                connection.disconnect();// 关闭连接

            }

        }

        return null;

    }
    public static String decodeUnicode(String theString) {

        char aChar;

        int len = theString.length();

        StringBuffer outBuffer = new StringBuffer(len);

        for (int x = 0; x < len;) {

            aChar = theString.charAt(x++);

            if (aChar == '\\') {

                aChar = theString.charAt(x++);

                if (aChar == 'u') {

                    int value = 0;

                    for (int i = 0; i < 4; i++) {

                        aChar = theString.charAt(x++);

                        switch (aChar) {

                            case '0':

                            case '1':

                            case '2':

                            case '3':

                            case '4':

                            case '5':

                            case '6':

                            case '7':

                            case '8':

                            case '9':

                                value = (value << 4) + aChar - '0';

                                break;

                            case 'a':

                            case 'b':

                            case 'c':

                            case 'd':

                            case 'e':

                            case 'f':

                                value = (value << 4) + 10 + aChar - 'a';

                                break;

                            case 'A':

                            case 'B':

                            case 'C':

                            case 'D':

                            case 'E':

                            case 'F':

                                value = (value << 4) + 10 + aChar - 'A';

                                break;

                            default:

                                throw new IllegalArgumentException(

                                        "Malformed      encoding.");

                        }

                    }

                    outBuffer.append((char) value);

                } else {

                    if (aChar == 't') {

                        aChar = '\t';

                    } else if (aChar == 'r') {

                        aChar = '\r';

                    } else if (aChar == 'n') {

                        aChar = '\n';

                    } else if (aChar == 'f') {

                        aChar = '\f';

                    }

                    outBuffer.append(aChar);

                }

            } else {

                outBuffer.append(aChar);

            }

        }

        return outBuffer.toString();

    }
}
